FKM rubber gaskets are made of fluoroelastomer, a synthetic rubber that is known for its hard wearing properties. The material is used for O-rings, seals, gloves and most importantly for this blog post, FKM is used for gaskets.
FKM gaskets are very commonly used in the oil and gas industry, due to FKM ability to withstand aggressive fuel, chemicals and a wide range of temperatures. Temperature-wise, FKM operates without a problem between -10c and up to 250c. Chemically, it is resistant to biocides, corrosion inhibitors, hydrate inhibitors and descalers. FKM also withstands high pressures and vibrations.
However, the material does have its drawbacks. It is not compatible with Ketones, Acetone, Skydrol, Ethyl Acetate and low molecular Esters and Ethers. FKM is also not recommended for use with car and aircraft brake fluids or for steam and hot water.
In industries such as oil and gas, where dangerous gases and chemicals are always present, this type of material is considered ideal. Used between two surfaces to prevent leaks, FKM gaskets create a durable seal that will not degrade despite exposure to the corrosive fuels and chemicals that move through it. You also can tell FKM gaskets from other rubber gaskets by their green or brown colouring.
FKM Gaskets in the real world...
So in what practical application would a FKM gasket be found? For starters, the transportation of Bio-diesel requires tubing, gaskets and hose linings made from FKM material. This is because Bio-diesel is a highly unstable fuel and would rapidly destroy other types of rubber if used. Because of its ability to withstand a wide range of temperatures, FKM gaskets are also found in engines and compressors where high temperatures are the norm. In recent years, FKM has become an important material for gaskets and seals specialist industries like aerospace, automotive, petroleum and chemical processing.
Custom FKM Gaskets
Custom FKM gaskets, o-ring or sections, can be created using sheets of FKM rubber. Using the measurements for your machine, a sheet of FKM (between 0.5mm and 10.0mm thickness) can be cut to your specifications.
At TYM, we can supply FKM rubber sheet and create custom FKM gaskets for your needs. Contact us to find out more.